xcode 5如何更改横屏竖屏

info plist里面修改
Supported interface orientations

Landscape (left home button) // 横屏

Landscape (right home button) // 横屏
Portrait (top home button) // 竖屏

Portrait (bottom home button) // 竖屏

RootViewController.mm里

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
// return UIInterfaceOrientationIsLandscape( interfaceOrientation ); // 横屏
return
UIInterfaceOrientationIsPortrait( interfaceOrientation ); // 竖屏
}